Bathroom types

Annexe and outbuilding bathrooms

What decides the layout

Supply pipework crossing an unheated void needs proper insulation and
where possible, a drain-down point for long periods of non-use.
Waste connections to the main house drainage
need permission-level thinking about invert levels rather than an assumption that it will fall.
Where the annexe is used by an older relative
planning for future grab rails at the boarding stage costs almost nothing now.

Before you commit

Waste connections to the main house drainage need permission-level thinking about invert levels rather than an assumption that it will fall.
en-suite bathroom installation project, Quedgeley (Gloucestershire), referenced in our guide to annexe bathrooms
Recent fully tiled bathroom refit completed in Stroud, relevant reference for Gloucestershire clients, referenced in our guide to annexe bathrooms

Your questions answered

Does an annexe bathroom need separate isolation?

It should have its own stopcock and isolators so it can be worked on or drained without shutting the main house down.

What about heating and drying the room?

Good extraction plus a heated towel rail is usually enough for a small annexe shower room in regular use.

Want the awkward part looked at first?

Access, existing pipework and floor build-up are the things that change a plan. Those get checked before anything is promised.